21x23_1/4x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack extraction Punches hole for FloraFlex® Micro

Punches hole for FloraFlex® Micro Tubing Accessories

CocoTek nutrients are designed for Coco and will work well with any growing method and media

This creates a barrier that insects don’t like

Power Supply: 100 - 150W

Centered drain fitting minimizes standing water

21x23_1/4x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack extraction Punches hole for FloraFlex® MicroNordic Pure Custom MERV 13 Plus Carbon air filters are made based on the actual measurements so be sure to measure your current filter to get the EXACT dimensions before ordering. As with all Nordic Pure filters, the effective life of your filter depends on the environment in which you live. We recommend changing 1 and 2 filters every 30 90 days. Our 4, 5 and 6 inch thick filters could last up to 6 months. EXACT MEASUREMENT: Furnace and air condition